From owner-svn-src-all@freebsd.org Sat May 4 00:56:48 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 33941159EF15; Sat, 4 May 2019 00:56:48 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id BBBC78F773; Sat, 4 May 2019 00:56:47 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 9FEB5AD4; Sat, 4 May 2019 00:56:47 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x440ulmx004348; Sat, 4 May 2019 00:56:47 GMT (envelope-from jhb@FreeBSD.org) Received: (from jhb@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x440ulAM004347; Sat, 4 May 2019 00:56:47 GMT (envelope-from jhb@FreeBSD.org) Message-Id: <201905040056.x440ulAM004347@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhb set sender to jhb@FreeBSD.org using -f From: John Baldwin Date: Sat, 4 May 2019 00:56:47 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r347073 - stable/11/sys/amd64/vmm/intel X-SVN-Group: stable-11 X-SVN-Commit-Author: jhb X-SVN-Commit-Paths: stable/11/sys/amd64/vmm/intel X-SVN-Commit-Revision: 347073 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: BBBC78F773 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.92 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.93)[-0.926,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 May 2019 00:56:48 -0000 Author: jhb Date: Sat May 4 00:56:47 2019 New Revision: 347073 URL: https://svnweb.freebsd.org/changeset/base/347073 Log: MFC 327065: Recognize a pending virtual interrupt while emulating the halt instruction. Modified: stable/11/sys/amd64/vmm/intel/vmx.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/amd64/vmm/intel/vmx.c ============================================================================== --- stable/11/sys/amd64/vmm/intel/vmx.c Fri May 3 23:07:07 2019 (r347072) +++ stable/11/sys/amd64/vmm/intel/vmx.c Sat May 4 00:56:47 2019 (r347073) @@ -3361,9 +3361,29 @@ vmx_pending_intr(struct vlapic *vlapic, int *vecptr) pir_desc = vlapic_vtx->pir_desc; pending = atomic_load_acq_long(&pir_desc->pending); - if (!pending) - return (0); /* common case */ + if (!pending) { + /* + * While a virtual interrupt may have already been + * processed the actual delivery maybe pending the + * interruptibility of the guest. Recognize a pending + * interrupt by reevaluating virtual interrupts + * following Section 29.2.1 in the Intel SDM Volume 3. + */ + uint64_t val; + uint8_t rvi, ppr; + vmx_getreg(vlapic_vtx->vmx, vlapic->vcpuid, + VMCS_IDENT(VMCS_GUEST_INTR_STATUS), &val); + rvi = val & APIC_TPR_INT; + lapic = vlapic->apic_page; + ppr = lapic->ppr & APIC_TPR_INT; + if (rvi > ppr) { + return (1); + } + + return (0); + } + /* * If there is an interrupt pending then it will be recognized only * if its priority is greater than the processor priority. @@ -3372,7 +3392,7 @@ vmx_pending_intr(struct vlapic *vlapic, int *vecptr) * interrupt will be recognized. */ lapic = vlapic->apic_page; - ppr = lapic->ppr & 0xf0; + ppr = lapic->ppr & APIC_TPR_INT; if (ppr == 0) return (1); @@ -3383,7 +3403,7 @@ vmx_pending_intr(struct vlapic *vlapic, int *vecptr) for (i = 3; i >= 0; i--) { pirval = pir_desc->pir[i]; if (pirval != 0) { - vpr = (i * 64 + flsl(pirval) - 1) & 0xf0; + vpr = (i * 64 + flsl(pirval) - 1) & APIC_TPR_INT; break; } }